EP 1173410 B1 20031022 - PROCESS FOR THE PREPARATION OF PHENYL GLYOXYLIC ACID ESTER OXIMES
Title (en)
PROCESS FOR THE PREPARATION OF PHENYL GLYOXYLIC ACID ESTER OXIMES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PHENYL GLYOXYL ESTER OXIME
Title (fr)
PROCEDE DE PREPARATION D'OXIMES DE PHENYLESTER D'ACIDE GLYOXYLIQUE
Publication
Application
Priority
- EP 0003289 W 20000412
- GB 9908530 A 19990414
Abstract (en)
[origin: US6670496B1] The invention relates to a process for the preparation of compounds of formula (I) wherein: R1 is optionally substituted alkyl, R2 is C1-C6alkyl, C3-C6cycloalkyl, C3-C6cycloalkyl-C1-C2alkyl, aryl, aryl-C1-C2alkyl, heterocyclyl, heterocycly-C1-C2alkyl, which groups are optionally substituted by alkyl, alkoxy, or halogen; in which process (I) an aniline of formula (II), is diazotized with an organic or inorganic nitrite or nitrous acid; (2) the resulting diazonium salt is reacted with an oxime of formula (III) in presence of a copper(II)-salt.
IPC 1-7
IPC 8 full level
C07C 249/12 (2006.01); C07C 251/48 (2006.01)
CPC (source: EP KR US)
C07C 249/12 (2013.01 - EP KR US)
C-Set (source: EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0063162 A1 20001026; AT E252548 T1 20031115; AU 4548100 A 20001102; BR 0009691 A 20020108; BR 0009691 B1 20101116; CN 1158247 C 20040721; CN 1347405 A 20020501; DE 60006093 D1 20031127; DE 60006093 T2 20040722; DK 1173410 T3 20040223; EP 1173410 A1 20020123; EP 1173410 B1 20031022; ES 2209872 T3 20040701; GB 9908530 D0 19990609; HK 1043984 A1 20021004; IL 145377 A0 20020630; JP 2002542225 A 20021210; JP 4049536 B2 20080220; KR 100662632 B1 20070102; KR 20020005623 A 20020117; MX PA01010362 A 20020506; US 6670496 B1 20031230
DOCDB simple family (application)
EP 0003289 W 20000412; AT 00926893 T 20000412; AU 4548100 A 20000412; BR 0009691 A 20000412; CN 00806204 A 20000412; DE 60006093 T 20000412; DK 00926893 T 20000412; EP 00926893 A 20000412; ES 00926893 T 20000412; GB 9908530 A 19990414; HK 02105677 A 20020801; IL 14537700 A 20000412; JP 2000612258 A 20000412; KR 20017011987 A 20010920; MX PA01010362 A 20000412; US 95871501 A 20011010